<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>计数器</title>
    <script src="counter.js"></script>
</head>
<body>
    <form action="get/post">
        <input type="text" id="num">
        <input type="button" value="stop" onclick="stopCount();">
    </form>
</body>
</html>